[ball]

I currently have 2-256MB 400 MHz DDR2 SDRAM memory sticks. I have four sockets to place memory sticks and would like to upgrade with more memory. If I buy a 1GB stick at say 533MHz will it be compatible with my current memory? Does it matter which sticks go in which sockets, i.e. does the larger memory need to go in the first one? Where is the best place to get more memory online?

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big breath....

to upgrade, the same ram sticks need to be in the same color slots on the mobo, i.e. 2 sticks of 1GB have to go in both white, or both blue slots for dual channel to work.

all ram is backwards compatible if you mobo doesnt support the higher speeds.

www.newegg.com is a great vendor for any pc need.

[fortune82]

big breath....

to upgrade, the same ram sticks need to be in the same color slots on the mobo, i.e. 2 sticks of 1GB have to go in both white, or both blue slots for dual channel to work.

all ram is backwards compatible if you mobo doesnt support the higher speeds.

www.newegg.com is a great vendor for any pc need.

[w0lverine]

also to compound on above answer, if you buy 533 to work with 400mhz, the 533 will clock down to 400 so that they can work.